My understanding had been that you get a double whammy of there being too many versions of the “common” dependencies, so it is already in-effect a per-site cach

My understanding had been that you get a double whammy of there being too many versions of the “common” dependencies, so it is already in-effect a per-site cache (or nearly so), but that uniqueness also means a fingerprint can be established with fairly few latency tests